139638669312 has 272 divisors, whose sum is σ = 405795816000. Its totient is φ = 42542825472.

The previous prime is 139638669271. The next prime is 139638669319. The reversal of 139638669312 is 213966836931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139638669319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108330364 + ... + 108331652.

Almost surely, 2^139638669312 is an apocalyptic number.

139638669312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139638669312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202897908000).

139638669312 is an abundant number, since it is smaller than the sum of its proper divisors (266157146688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139638669312 is an equidigital number, since it uses as much as digits as its factorization.

139638669312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1342 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 57.

The spelling of 139638669312 in words is "one hundred thirty-nine billion, six hundred thirty-eight million, six hundred sixty-nine thousand, three hundred twelve".